Process of supplying abrasive to glass-grinding apparatus.



W. l. GOHGHTLY,

PROCESS OF SUPPLYiNG ABRASIVE T0 GLASS GRINDING APPARATUS.

1 APPLICATION FILED JUNE 13. IBM.

' Patented Apr 20, 1915.

2 SHEETS-SHEET 1.

wrmisses -IHMWEWITOW W. 1. GOHGHTL'Y.

PROCESS OF SUPPLYING ABRASIVE T0 GLASS GRINDING APPARATUS.

' APPLICATION FILED JUNE 13. 19H.

v mlgfipgggfl Patented Apr. 20, 1915. SHEET 2 2 SHEETS- WITNESSES uNvEMToR 7%. M 7 M/% kw l hltlihlt WVILLIAM T. GOLIGHTLY, OF KOKOMO, INDIANA, ASSEGNOR TO PM.T "55Bit/(1:123 PLATE GLASS COMPANY, OF PITTSBURGH, PENNSYLVANIA, CORPORATION OF PENNSYL- vnma.

PROCESS BF SUPPLYING- ABRASIVE T GLASS-GRINDING ACPZEARATUS.

masses.

Patented Apia 25%, 11915 J Application filed June 13, 1911 Serial Ho. 632,979.

\ To all whom it may concern Be it known that 1, WILLIAM, J. oa-

UIGHTLY, a citizen of the United States, re-

ling at Kokomo, in the county of Howard and State of Indiana, have invented certain new and usefullmprovements in Processes of Supplying Abrasive to Glass-Grinding Apparatus, of which the. following is a speci- The invention relates to a process for supplying sand to glass grinding apparatus.

It has for its principal objects; the provision of a process in which the sand may be supplied economically and conveniently and with the proper proportion. of water; and the provision of a process in which the abrasive maybe re-used and in which the labor of manually handling the sand is substantially eliminated. The apparatus preferably employed in carrying out the process is the same as that-shown in my pending application, Serial Number 626,803,!iled May 12,

' 1911, such apparatus being illustrated in the accompanying drawings, wherein Figure l is a diagrammatic plan view of the apparatus, FigQQ is a side elevation of the apparatus of'Fig. 1, andFig. 3 is a sec tion on the line. IIIIII of Fig. 1.

As shown in Figs. 1, 2 and 3, l'is the grinding table which may be of any approved form; 2 and 3 are the runners; 1 is a ditch into which. the abrasive and Water from the grinding table 1 is discharged; 5

is a pit to which .the ditch l discharges through the passage 6 (Figs. 1 and 3); 7 's an overflow passage leading from the pit 5'; 8 is a centrifugal pump for elevating the mixture of sand and water discharged to the pit 5; 91s a delivery tank located above 450 the grinding table 1, and having an inclined delivery pipe 10, leading to the'table; 11' is the pipe leading from the pump 8 and discharging into the upper end of the tank. 9; 12 is an over-flow pipe leading from the tank-9; and 13 is a water supply pipe leading into the upper end of'the pipe 10.

In operation the r nixture of sand and water'from the ditch 4 flows into the pit 5 andis pumped up to the tank 9 through the pipe 11. The finer particlesof sand are carried out of the tank 9 with the over-flow water which passes through the pipe '12, While the heavier, and'larger' particles of sand settle in the-tank 9 forming a relatively thick mixture. The sand which thus settles in the tank 9 is washed to the table 1 by means of the inflow of Water through the pipe 13, the flow through such pipe be ing regulated by means of the valve 14:, so as to provide the necessary quantity of sand to and the proper proportion of? sand and Water. The flow of water from the pipe 13 acting upon thesandiin the lower portion of the tank washes away the extreme lower portions of,such sand and undermines the (it portions thereabove, so that packing and clogging of the sand is avoided, and a free and uninterrupted flow of the mixture is secured as long as the valve 1a is open. There is thus no diiliculty in getting the sand into suspension after'it has once settled in the tank 9, and theabrasive may be repeatedly re-used, the over-flow 12 taking care of the finer particles which are too small for efiective use in the grinding op er'atiom The provision of the flow of water through the lower portion oi. the abrasive from the pipe 13, avoids the necessity, which would otherwise be present in apparatus of this character, of the provision of means for 30 maintaining the sand in the tank in suspension in order to permit settling and to secure a proper discharge through the outlet pipe 10. 'In case the use of the apparatus is discontinued andall the sand which has been in suspension settles in the tank, the practice of the methodqas above described permits of'the bringing of the sand into suspension for use'without difiiculty.

. Having thus described my invention and 99 illustrated its use, what I claim. as new and desire to secure by Letters Patent is the following I Y 1. The process of supplying abrasive to glass grinding apparatus which consists in conducting the drainage from the grinding apparatus and including a mixture of water with all the utiliza 1e grades of abrasive.

abrasive .to-the grinding apparatus by'the 9 application of fluid under pressure to the lower-portion of the receptacle:

1 2. The method otsupplyingiabrasive to; grinding mechanism, whichconsists in conducting the drainage containing the coarsest 1'6 lute-EH30 preper eensietezxey'during the step gmfiee 03 ebmve direct 3 from the grind.- ef'supp iying the mixture to the grinding eg meehemisltigie single settling reeepmmeclmnim ng 62e, eeeelieg ahe finii'mturefof Water amiabrw In testimony whereof I have hereunto 's'liveiii-*tfiegeeepigeele'lfie' a eonsistency'thickex signed my nar in the presence of the two 5 than? that which?! is mq iree in the grinding subscribed W 5568.

ega emiezi' supp yinv emixture from, the VT .f-v T hwe: portiei; Of the beceptaele to the grin&- M GOLLG rm mg meehem's m and adding mere Waterto Witnesses: tfie mixme as ii; ieaves the receptacle to di- M11301: BELL,-

Dlizsy vrNeToza-u 

